E-commerce giant Amazon reportedly had to scrap a machine-learning recruitment tool because it was biased against female candidates.

According to a report from Reuters, Amazon started building the platform in 2014, to help speed up the recruitment process by making it automated and more efficient. It rated resumes out of five, automatically ranking candidates in terms of suitability.

However, by 2015, the company realised the tool was consistently ranking resumes that featured the word ‘women’ poorly, compared to those that didn’t.

Any resume that mentioned involvement in women’s clubs or sports teams, for example, were downgraded. According to Reuters, it also downgraded graduates of two women’s colleges.

Any artificial intelligence or machine learning technology is only as smart as the information it’s learning from. Amazon’s tool was designed to analyse hiring patternsover a ten-year period — a period when the vast majority of hires, especially engineers and data scientists, were male.

This trend led to the tool ‘learning’ that Amazon did not want to hire female applicants.

According to Reuters, Amazon recruiters never relied on the tool entirely and stopped using it once the issue was raised. Now, the tech giant only uses a very watered down version of the tool, and only for administrative tasks. Read more